Species Robert geranium

Robert geranium

Geranium robertianum

Also Known As - herb Robert
Robert geranium, or Geranium robertianum, is a low-maintenance flowering perennial plant. Its magenta-pink blossoms, with white or yellow centers, form a showy canopy that blooms from summer to fall. It needs medium water and grows best in part shade. It is a hardy plant and tolerates a range of conditions from moist to dry soils. It is a larval host plant for certain butterflies, making it an excellent choice for a wildlife habitat or butterfly garden. When planted in mass, Robert geranium adds texture and color to a garden.

Cycle:

Herbaceous Perennial

Watering:

Frequent

Propagation:

Seed Propagation

Hardiness Zone:

6

Flowers:

Pink, Magenta, (Flower with white streaks) Flowers In Spring

Sun:

Filtered shade, Part sun/part shade

Soil:

Rocky , gravelly , dry, Well-drained

Fruits:

Fruits In Spring Ready In

Leaf:

Yes

Leaf Color:

green

Growth Rate:

Moderate

Salt Tolerant:

Yes

watering

Robert geranium should be watered when the top inch of soil feels dry to the touch. Water gently, being careful not to get the leaves wet. It’s best to apply water to individual plants and near the base of the stem. Avoid overhead sprinklers. Avoid watering during the hottest times of the day. Water deeply, providing enough so that water runs out the bottom of the pot. A good rule of thumb is to water about 1 inch of water per week. Water less in the winter when the plant slows down its growth.

sunlight

Robert geranium (Geranium robertianum) thrives in full sunlight. It should be placed in a location where the plants receive at least 5-6 hours of direct sunlight each day. In areas with hotter temperatures, however, Robert geranium can do well in part sun or partial shade as long as it receives at least 3 hours of direct sunlight daily. Watering needs are minimal as Robert geranium prefers the soil to dry out between waterings. When watering, ensure to thoroughly water the soil around the base of the plant.

pruning

Robert geraniums should be pruned lightly in mid- to late spring. These plants are quite hardy and can handle a moderate amount of pruning. Start by removing any dead or diseased stems. Then, soften the shape of the plant by pruning back a few of the longest stems by 1-third of their length. This will help keep the plant shape and reduce any legginess. After that, lightly trim off any tips of stems that appear damaged. Finally, pinch off any leggy flowers. Pruning Robert geraniums too heavily can damage the delicate blooms or result in the plant not producing flowers.

Season

Fall
Winter
Spring
Summer
Sep
Oct
Nov
Dec
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Starts Flowering

Robert geranium typically starts flowering in April.

Harvest Fruit

The harvesting season for Geranium robertianum typically begins in June and ends in August.

Hardiness Map